the colour is furness, which is the name used for these in OEG. in pekins they are called furnace. there is a town in the uk called furness. are you sure it didnt come from mille fleurs? they throw them sometimes but usually develop mottling. they can also be called brassy back or pole cat.
In this pen i have a birchen roo,columbian and buff columbian pullets.They throw birchen,columbian,buff columbian,black reds a neat black spotted buff and now these I have a roo as well.